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Dirac Cones in two-dimensional conjugated polymer networks

Author

Listed:
  • Jean-Joseph Adjizian

    (IMN, CNRS UMR6502, Université de Nantes)

  • Patrick Briddon

    (IMN, CNRS UMR6502, Université de Nantes)

  • Bernard Humbert

    (IMN, CNRS UMR6502, Université de Nantes)

  • Jean-Luc Duvail

    (IMN, CNRS UMR6502, Université de Nantes)

  • Philipp Wagner

    (IMN, CNRS UMR6502, Université de Nantes)

  • Coline Adda

    (IMN, CNRS UMR6502, Université de Nantes)

  • Christopher Ewels

    (IMN, CNRS UMR6502, Université de Nantes)

Abstract

Linear electronic band dispersion and the associated Dirac physics has to date been limited to special-case materials, notably graphene and the surfaces of three-dimensional (3D) topological insulators. Here we report that it is possible to create two-dimensional fully conjugated polymer networks with corresponding conical valence and conduction bands and linear energy dispersion at the Fermi level. This is possible for a wide range of polymer types and connectors, resulting in a versatile new family of experimentally realisable materials with unique tuneable electronic properties. We demonstrate their stability on substrates and possibilities for doping and Dirac cone distortion. Notably, the cones can be maintained in 3D-layered crystals. Resembling covalent organic frameworks, these materials represent a potentially exciting new field combining the unique Dirac physics of graphene with the structural flexibility and design opportunities of organic-conjugated polymer chemistry.

Suggested Citation

  • Jean-Joseph Adjizian & Patrick Briddon & Bernard Humbert & Jean-Luc Duvail & Philipp Wagner & Coline Adda & Christopher Ewels, 2014. "Dirac Cones in two-dimensional conjugated polymer networks," Nature Communications, Nature, vol. 5(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6842
    DOI: 10.1038/ncomms6842
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    Cited by:

    1. Xin Zhang & Xiaoyin Li & Zhengwang Cheng & Aixi Chen & Pengdong Wang & Xingyue Wang & Xiaoxu Lei & Qi Bian & Shaojian Li & Bingkai Yuan & Jianzhi Gao & Fang-Sen Li & Minghu Pan & Feng Liu, 2024. "Large-scale 2D heterostructures from hydrogen-bonded organic frameworks and graphene with distinct Dirac and flat bands," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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